Monday, April 6, 2020

Basic: How do I find what's using my bandwidth?

I run some servers in a colo facility behind a Juniper SRX firewall. Nothing special, just NAT and ipv4.

Suddenly our outbound traffic has ramped up and is causing me issues. I need to find what the traffic is, but it could be from any of 50 servers.

I believe I need to use "netflow" or "jflow" for this, but I can't find a decent thing for collecting / reviewing it.

What are you all using? I need something free/quite cheap as this is for 1 device only and we're only a small company.



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